My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX920ESA+T
- Part No.:
- MAX920ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX920ESA+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,957
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX920ESA+T from Maxim Integrated is a nanopower, open-drain output comparator in an 8-pin SO package, guaranteed to operate from +1.8V to +5.5V supply, with 380nA supply current, Beyond-the-Rails™ input range (VEE − 0.2V to VCC + 0.2V), and internal 4mV hysteresis - designed for ultra-low-power 2-cell battery monitoring and threshold detection in portable medical and telemetry systems.
For engineers reviewing the MAX920ESA+T datasheet, MAX920ESA+T pinout, MAX920ESA+T application, or MAX920ESA+T equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative options, and supply-chain support details specific to the MAX920ESA+T - not generic comparator family data.
Technical Context
The MAX920ESA+T implements a rail-to-rail input stage with 200mV Beyond-the-Rails operation and an open-drain output capable of sinking up to 8mA while maintaining VOL ≤ 400mV at VCC = 1.8V/ISINK = 1mA. Its internal hysteresis band is fixed at 4mV (typ), eliminating external feedback components for noise-immune switching in slow-signal applications like battery voltage monitoring.
Unlike push-pull comparators, the MAX920ESA+T's open-drain architecture enables mixed-voltage interfacing - its output can be pulled up to any voltage ≤ 6V above VEE, supporting logic-level translation between 1.8V, 3.3V, and 5V domains without level-shifters. Supply-current surges during switching are minimized via crowbar-current-free output design, reducing supply-line glitches and easing power-supply filtering requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 380nA (typ) at +25°C - enables >2.5 million hours of operation on a 750mAh AA cell, critical for decade-long battery life in remote sensors. |
| Supply Voltage Range | +1.8V to +5.5V - supports direct interface with single Li-ion (3.0–4.2V), dual alkaline (2.4–3.0V), or NiMH (2.4–3.0V) battery stacks without regulation. |
| Input Common-Mode Range | VEE − 0.2V to VCC + 0.2V - allows sensing at ground or supply rail (e.g., battery cathode monitoring), eliminating need for resistive dividers in many cases. |
| Output Type | Open-drain - enables wired-OR logic, I²C-compatible bus sharing, and level translation (e.g., 5V MCU controlling 3.3V peripheral enable line). |
| Propagation Delay | 35µs (typ, VCC = 5V, RPULLUP = 100kΩ) - sufficient for sub-30kHz threshold detection in battery fuel gauging and low-speed telemetry triggers. |
| Hysteresis | 4mV (typ) - suppresses chatter from <10mV noise on slowly ramping signals (e.g., thermistor-based temperature thresholds). |
| Input Offset Voltage | 1mV (typ) - ensures accurate trip-point setting within ±1mV when used with precision reference or divider networks. |
Pinout & Package
MAX920ESA+T is housed in an 8-pin SO (Small Outline) package with standard JEDEC MS-012AC outline (Package Code S8+2, RoHS-compliant). Pin 1 is marked by a dot or notch; pin numbering follows counter-clockwise convention from the marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | N.C. | No internal connection - must be left unconnected; no routing or grounding required. |
| 2 | VEE | Negative supply terminal - connects to system ground (0V) in single-supply configurations; sets lower rail for input/output swing. |
| 3 | IN− | Inverting input - accepts reference voltage or fixed threshold; compatible with ground-referenced or rail-referenced inputs. |
| 4 | IN+ | Noninverting input - receives monitored signal (e.g., battery voltage, sensor output); operates down to VEE − 0.2V. |
| 5 | OUT | Open-drain output - sinks current only; requires external pullup resistor to define high-state voltage and logic level. |
| 6 | VCC | Positive supply terminal - powers internal circuitry; must be bypassed with 100nF capacitor if supply impedance exceeds 1Ω. |
| 7 | N.C. | No internal connection - must be left unconnected; no routing or grounding required. |
| 8 | N.C. | No internal connection - must be left unconnected; no routing or grounding required. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 380nA supply current | Reduces quiescent power to 0.69µW at 1.8V - extends battery life in always-on wake-up monitors beyond 10 years. |
| Beyond-the-Rails™ input range | Accepts inputs 200mV below ground or above VCC - enables direct sensing of battery cathode voltage without level-shifting resistors. |
| Open-drain output with 6V absolute max rating | Supports safe interfacing to higher-voltage logic (e.g., 5V MCU GPIO) while powered from 1.8V - eliminates external level translators. |
| Internal 4mV hysteresis | Prevents oscillation on noisy or slowly varying inputs (e.g., thermistor outputs) without requiring external positive feedback components. |
| Crowbar-current-free switching | Minimizes supply current spikes during output transitions - reduces need for large bulk capacitors and improves EMI performance. |
Applications
| Battery Voltage Monitoring | Logic-Level Translation |
|---|---|
Use Scenario: Monitoring discharge voltage of dual-cell alkaline or NiMH batteries in portable medical devices to trigger low-battery alerts before cutoff. IC Role / Device Role / Timing Role: Comparator compares battery voltage against fixed threshold (e.g., 2.4V) using IN+ and IN−; open-drain output drives microcontroller interrupt pin. Use Value: 380nA quiescent current ensures >2.5 million hours of continuous monitoring on 750mAh cells; Beyond-the-Rails input allows direct cathode sensing without resistor dividers. |
Use Scenario: Converting 5V logic signals from a host MCU to 3.3V-compatible enable lines for peripheral ICs in a mixed-voltage embedded system. IC Role / Device Role / Timing Role: MAX920ESA+T acts as a level translator - VCC = 5V, OUT pulled up to 3.3V, generating clean 0–3.3V output swing. Use Value: Open-drain output rated to 6V abs max prevents damage to 3.3V peripherals; propagation delay <35µs supports reliable handshaking at ≤10kHz. |
| Telemetry Threshold Detection | Zero-Crossing Sensing |
Use Scenario: Detecting when analog sensor output (e.g., pressure transducer) crosses a predefined threshold in remote environmental monitoring nodes. IC Role / Device Role / Timing Role: Comparator compares sensor output (IN+) against reference (IN−); hysteresis prevents false triggers from RF or thermal noise. Use Value: 4mV internal hysteresis eliminates need for external feedback resistors; 1.8V operation allows direct use with low-voltage sensor front-ends. |
Use Scenario: Detecting AC zero-crossings in low-power energy metering or motor control subsystems where mains isolation is achieved via transformer or optocoupler. IC Role / Device Role / Timing Role: IN− tied to ground, IN+ connected to isolated AC signal; output toggles at each polarity reversal of input sine wave. Use Value: Input common-mode range includes ground (VEE − 0.2V), enabling true zero-reference detection without biasing networks; 380nA current minimizes burden on signal source. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower open-drain comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | 320nA supply current, 1.8–5.5V range, open-drain output, but no internal hysteresis (requires external feedback) | Suitable for ultra-low-IQ designs where hysteresis is added externally; lacks integrated 4mV hysteresis band | Select when lowest possible IQ (<320nA) is mandatory and board space allows two external resistors for hysteresis. |
| MAX40007AXT+T | 600nA supply current, 1.6–5.5V range, open-drain output, 6.5mV hysteresis, rail-to-rail inputs | Higher IQ but wider supply range and larger hysteresis; better for noisy industrial environments | Select when operating below 1.8V (e.g., coin-cell 1.5V systems) or requiring >4mV hysteresis for aggressive noise immunity. |
Compared with TLV3691IDBVR and MAX40007AXT+T, the MAX920ESA+T uniquely balances ultra-low 380nA IQ, guaranteed 1.8V operation, and factory-trimmed 4mV hysteresis - making it optimal for space-constrained, long-life battery systems where component count and layout simplicity are critical.
Availability
MAX920ESA+T is available at Aetrix Electronics and suitable for 2-cell battery monitoring/management, ultra-low-power telemetry systems, and portable medical instrument design requiring stable component supply across multi-year production cycles.
Supply support for MAX920ESA+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.
The MAX917–MAX920 family was designed specifically for nanopower, rail-aware threshold detection in battery-powered portable equipment - emphasizing minimal supply current, wide input voltage tolerance, and robust noise immunity without external components.
FAQ
What is the maximum allowable output sink current for MAX920ESA+T?
The MAX920ESA+T is specified to sink up to 8mA while maintaining VOL ≤ 400mV at VCC = 1.8V and TA = +25°C. Absolute maximum rating is ±50mA, but sustained operation above 8mA may increase VOL beyond system logic thresholds and is not characterized over temperature. For reliable 3.3V or 5V logic interfacing, keep sink current ≤ 8mA with appropriate pullup resistor selection.
Does MAX920ESA+T include an internal voltage reference?
No, the MAX920ESA+T does not include an internal voltage reference. It belongs to the reference-less variant of the MAX917–MAX920 family (like MAX919/MAX920), drawing only 380nA supply current. The reference-equipped versions are MAX917 and MAX918, which integrate a 1.245V ±1.5% reference and consume 750nA. For MAX920ESA+T, external reference or resistor-divider threshold setting is required.
Can MAX920ESA+T operate with input voltages below ground?
Yes, the MAX920ESA+T supports input voltages down to VEE − 0.2V. When VEE = 0V (ground), IN+ and IN− accept signals as low as −0.2V - enabling true ground-referenced or slightly negative signal monitoring (e.g., op-amp output swings near rail). This Beyond-the-Rails™ capability eliminates level-shifting circuits in many sensor interface applications.
What is the recommended pullup resistor value for MAX920ESA+T's open-drain output?
A 100kΩ pullup resistor is used in characterization (e.g., tPD tests), but actual value depends on speed and load requirements. For <10kHz switching, 100kΩ–1MΩ is typical; for faster edges, reduce to 10kΩ–47kΩ. Ensure pullup voltage does not exceed 6V above VEE. At 3.3V pullup and 8mA sink, minimum R = 412Ω - but higher values preserve ultra-low IQ and are preferred in battery-critical designs.
Is MAX920ESA+T pin-compatible with other devices in the MAX917–MAX920 family?
No, MAX920ESA+T is not pin-compatible with the 5-pin SOT23 variants (e.g., MAX920EUK+T). The MAX920ESA+T uses an 8-pin SO package with pins 1, 7, and 8 designated N.C., whereas SOT23-5 has all five pins active. Direct replacement requires PCB redesign. However, functional equivalence exists with MAX919ESA+ (push-pull, same package) and MAX920EUK+T (open-drain, SOT23-5), subject to layout adaptation.
MAX920ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- Beyond-the-Rails™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 5mV @ 5V
- Voltage - Input Offset (Max):
- 0.001µA @ 5V
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 1.2µA
- Current - Quiescent (Max):
- 66.02dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX920ESA+T FAQ
1.How can I place an order for MAX920ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX920ESA+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX920ESA+T reliable?
The price and inventory of MAX920ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX920ESA+T is usually 5 days.
3.What payment methods are accepted for MAX920ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX920ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX920ESA+T?
MAX920ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX920ESA+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX920ESA+T?
For technical support, including MAX920ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX920ESA+T requirements.
6.How does Aetrix verify that MAX920ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX920ESA+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX920ESA+T meets industry standards.
7.What is the process for return or replacement of MAX920ESA+T?
All MAX920ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX920ESA+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX920ESA+T part is unused and in its original packaging.
Return procedure for MAX920ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX920ESA+T Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
